【剑指Offer】16.合并两个排序的链表 python实现

题目描述

输入两个单调递增的链表，输出两个链表合成后的链表，当然我们需要合成后的链表满足单调不减规则。

代码：

class Solution:
    # 返回合并后列表
    def Merge(self, pHead1, pHead2):
        # write code here
        #初始化
        tmp = ListNode(0)
        pHead = tmp        
        while pHead1 and pHead2:
            if pHead1.val < pHead2.val:
                tmp.next = pHead1
                pHead1 = pHead1.next
            else:
                tmp.next = pHead2
                pHead2 = pHead2.next
            tmp = tmp.next
        if not pHead1:
            tmp.next = pHead2
        if not pHead2:
            tmp.next = pHead1
        return pHead.next